I am currently building a wing for an RV-4 and after sheeting the bottom of the wing (from the spar forward) I noticed that it was slightly warpped (about 1/8"). Does anyone know of any tricks to straighten it out or do I need to order new wing parts? Thanks for your help.

1/8 inch... youcan hold it over steam for about 2 min and bend oppoite the warp. then set the wing on a flat surface and weight it down for about an hour or so... warp should be gone.

Youcan also remove minor warps when putting on the covering. Bend opposite the warp, iron out the wrinkles, check to see if you cured it or overcorected...

Do as FH suggested with the steam. Then get right at it and sheet the top to lock it in. Should turn out fine.

Mark Shuman

Thanks for the help. I'll give this a try. Both top and bottom have already been sheeted. Will this still work?

With as minor a warp as you have... it should work... steam it more if just 5 min doesn't do it.

If it were a major warp ( 1/2 inch or more over a 2 ft span, 8 inch chord for example) you would possibly be peeling off the upper sheeting